Phase Retrieval Methods

Phase retrieval methods are techniques used to reconstruct a complete image or signal from measurements that only capture its intensity, not phase information. Since phase carries critical details about the wave’s position and structure, these methods involve algorithms that iteratively estimate the missing phase based on known data and physical constraints. Common applications include microscopy, astronomy, and laser imaging, where capturing phase directly is challenging. By solving these inverse problems, phase retrieval enables accurate reconstruction of complex signals or objects from simpler intensity measurements, facilitating detailed visualization and analysis in various scientific and engineering fields.